Chiasmus
Pronunciation : Chi*as"mus
Part of Speech : n.
Etymology : [NL., fr. Gr. Chiasm.] (Rhet.)
Definition : Defn: An inversion of the order of words or phrases, when repeated or subsequently referred to in a sentence; thus, If e'er to bless thy sons My voice or hands deny, These hands let useful skill forsake, This voice in silence die. Dwight.
Source : Webster's Unabridged Dictionary, 1913